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-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

schickel 2012-04-15 02:23

[QUOTE=jrk;296397]One of my two ECM runs on line 3027 produced this gem:
[code]Run 153 out of 2000:
Using B1=10000000, B2=46842680440, polynomial Dickson(12), sigma=3536871957140198850
Step 1 took 27866ms
Step 2 took 15738ms
********** Factor found in step 2: 5551206901172054583062351210595874081775416652238749
Found probable prime factor of 52 digits: 5551206901172054583062351210595874081775416652238749
Probable prime cofactor 129906928311090953880459217864523818071838252366190167685116209056556687270679 has 78 digits[/code][/QUOTE]Wow, I never get that lucky on [I]my[/I] c130s!

[EDIT: It's also good to see that the downdriver is still alive (now, as long as the 5 doesn't add any digits); we're still golden....]

Andi47 2012-04-15 08:55

starting ECM @3e6 on alq4788.3033 c131

debrouxl 2012-04-15 09:02

600 @ B1=3e6 on the C131, NF.

mataje 2012-04-15 10:39

330 @ B1=3e6 on the C131, NF.

akruppa 2012-04-15 13:26

Found probable prime factor of 48 digits: 159450259206967402524996975215244611239608534557
Edit: starting NFS on c108

akruppa 2012-04-15 16:06

It got factored.

RichD 2012-04-15 21:18

i3041 has a C126 remaining .. and the 5 is gone!
(total size down to 137)

akruppa 2012-04-15 22:45

Did 2400@3M, now doing 2k@11M on c126.

rajula 2012-04-16 12:29

I threw 1500@3M on the c121@i3044. [SIZE="1"](I could do NFS, but I would not be able to read the factors before tomorrow morning, so I'll leave it to someone else.)[/SIZE]

RobertS 2012-04-16 17:27

[QUOTE=rajula;296500]I threw 1500@3M on the c121@i3044. [SIZE=1](I could do NFS, but I would not be able to read the factors before tomorrow morning, so I'll leave it to someone else.)[/SIZE][/QUOTE]
NFS:
PRP61 = 4261063551706376757731519359860876519277978869182669884472831
PRP60 = 541450378688037124823705235698592946874107589893049486011051

Now sieving c101@3045 ... done

firejuggler 2012-04-16 17:35

at this size, isn't it quicker to directly nfs?


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